Revision: 702
http://rpy.svn.sourceforge.net/rpy/?rev=702&view=rev
Author: lgautier
Date: 2008-11-23 12:52:29 +0000 (Sun, 23 Nov 2008)
Log Message:
-----------
Split numpy-related doc into its own .rst file.
Modified Paths:
--------------
rpy2/trunk/doc/source/index.rst
rpy2/trunk/doc/source/rinterface.rst
rpy2/trunk/doc/source/robjects.rst
Added Paths:
-----------
rpy2/trunk/doc/source/numpy.rst
Modified: rpy2/trunk/doc/source/index.rst
===================================================================
--- rpy2/trunk/doc/source/index.rst 2008-11-23 08:12:45 UTC (rev 701)
+++ rpy2/trunk/doc/source/index.rst 2008-11-23 12:52:29 UTC (rev 702)
@@ -8,6 +8,7 @@
overview
introduction
robjects
+ numpy
rinterface
rpy_classic
rlike
Added: rpy2/trunk/doc/source/numpy.rst
===================================================================
--- rpy2/trunk/doc/source/numpy.rst (rev 0)
+++ rpy2/trunk/doc/source/numpy.rst 2008-11-23 12:52:29 UTC (rev 702)
@@ -0,0 +1,85 @@
+
+Numpy
+=====
+
+A popular solution for scientific computing with Python is :mod:`numpy`
+(previous instances were :mod:`Numpy` and :mod:`numarray`).
+
+:mod:`rpy2` has features for facilitating the integration with code using
+:mod:`numpy` in both directions: from `rpy2` to `numpy`, and from `numpy`
+to `rpy2`.
+
+High-level interface
+--------------------
+
+From `rpy2` to `numpy`:
+^^^^^^^^^^^^^^^^^^^^^^^
+
+Vectors can be converted to :mod:`numpy` arrays using
+:meth:`array` or :meth:`asarray`::
+
+ import numpy
+
+ ltr = robjects.r.letters
+ ltr_np = numpy.array(ltr)
+
+This behavior is inherited from the low-level interface,
+and is means that the objects presents an interface recognized by
+`numpy`, and that interface used to know the structure of the object.
+
+
+
+From `numpy` to `rpy2`:
+^^^^^^^^^^^^^^^^^^^^^^^
+
+The conversion of `numpy` objects to `rpy2` objects can be
+activated by importing the module :mod:`numpy2ri`::
+
+ import rpy2.robjects.numpy2ri
+
+That import alone is sufficient to switch an automatic conversion
+of `numpy` objects into `rpy2` objects.
+
+
+.. note::
+
+ Why make this an optional import, while it could have been included
+ in the function :func:`py2ri` (as done in the original patch
+ submitted for that function) ?
+
+ Although both are valid and reasonable options, the design decision
+ was taken in order to decouple `rpy2` from `numpy` the most, and
+ do not assume that having `numpy` installed automatically
+ meant that a programmer wanted to use it.
+
+
+.. literalinclude:: ../../rpy/robjects/numpy2ri.py
+
+
+
+Low-level interface
+-------------------
+
+The :class:`rpy2.rinterface.SexpVector` objects are made to
+behave like arrays, as defined in the Python package :mod:`numpy`.
+
+The functions :func:`numpy.array` and :func:`numpy.asarray` can
+be used construct `numpy` arrays:
+
+
+>>> import numpy
+>>> rx = rinterface.SexpVector([1,2,3,4], rinterface.INTSXP)
+>>> nx = numpy.array(rx)
+>>> nx_nc = numpy.asarray(rx)
+
+
+.. note::
+ when using :meth:`asarray`, the data are not copied.
+
+>>> rx[2]
+3
+>>> nx_nc[2] = 42
+>>> rx[2]
+42
+>>>
+
Modified: rpy2/trunk/doc/source/rinterface.rst
===================================================================
--- rpy2/trunk/doc/source/rinterface.rst 2008-11-23 08:12:45 UTC (rev
701)
+++ rpy2/trunk/doc/source/rinterface.rst 2008-11-23 12:52:29 UTC (rev
702)
@@ -366,34 +366,8 @@
-.. index::
- pair: SexpVector; numpy
+.. rubric:: Constructors
-Numpy
-^^^^^
-
-The :class:`SexpVector` objects are made to behave like arrays as defined
-in the Python package :mod:`numpy`.
-
-The functions *array* and *asarray* is all that is needed:
-
-
->>> import numpy
->>> rx = rinterface.SexpVector([1,2,3,4], rinterface.INTSXP)
->>> nx = numpy.array(rx)
->>> nx_nc = numpy.asarray(rx)
-
-
-.. note::
- when using :meth:`asarray`, the data are not copied.
-
->>> rx[2]
-3
->>> nx_nc[2] = 42
->>> rx[2]
-42
->>>
-
.. autoclass:: rpy2.rinterface.SexpVector(obj, sexptype, copy)
:show-inheritance:
:members:
Modified: rpy2/trunk/doc/source/robjects.rst
===================================================================
--- rpy2/trunk/doc/source/robjects.rst 2008-11-23 08:12:45 UTC (rev 701)
+++ rpy2/trunk/doc/source/robjects.rst 2008-11-23 12:52:29 UTC (rev 702)
@@ -1,4 +1,5 @@
+
********************
High-level interface
********************
@@ -311,58 +312,6 @@
.. index::
- pair: RVector; numpy
-
-Numpy
------
-
-A popular solution for scientific computing with Python is :mod:`numpy`
-(previous instances were :mod:`Numpy` and :mod:`numarray`).
-
-:mod:`rpy2` has features for facilitating the integration with code using
-:mod:`numpy` in both directions: from `rpy2` to `numpy`, and from `numpy`
-to `rpy2`.
-
-
-From `rpy2` to `numpy`:
-^^^^^^^^^^^^^^^^^^^^^^^
-
-Vectors can be converted to :mod:`numpy` arrays using
-:meth:`array` or :meth:`asarray`::
-
- import numpy
- ltr = robjects.r.letters
- ltr_np = numpy.array(ltr)
-
-Refer to the documentation for :class:`rinterface.SexpVector`
-for further details.
-
-From `numpy` to `rpy2`:
-^^^^^^^^^^^^^^^^^^^^^^^
-
-The conversion of `numpy` objects to `rpy2` objects can be
-activated by importing the module :mod:`numpy2ri`::
-
- import rpy2.robjects.numpy2ri
-
-That import alone is sufficient to switch an automatic conversion
-of `numpy` objects into `rpy2` objects.
-
-
-.. note::
-
- Why make this an optional import, while it could have been included
- in the function :func:`py2ri` (as done in the original patch
- submitted for that function) ?
-
- Although both are valid and reasonable options, the design decision
- was taken in order to decouple `rpy2` from `numpy` the most, and
- do not assume that having `numpy` installed automatically
- meant that a programmer wanted to use it.
-
-
-
-.. index::
pair: robjects;REnvironment
pair: robjects;globalEnv
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